[Boost-users] some questions regarding ref

Hi, I want to have a few classes to be stored inside a vector by reference. I thought to use boost::ref for that purpose , instead of storing pointer. However I am facing some problem regarding the operator & . Here is a sample code which gives the problem, struct T2{ int x; T2(int x) :x(x){} }; int main(int argc,char** argv) { std::vector v; /// vector stores reference, rather than value. T2 t1 = 10; T2 t2 = 15; v.push_back(boost::ref(t1)); /// push ref to t1. v.push_back(boost::ref(t2)); ///push ref to t2. v[0].get().x = 5; ///get by ref & change. /// v[0].x = 5 ; this statement doesn't work! std::cout<